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* @packageDocumentation
*
* Main editor page for a loaded project. Wraps `ProjectLayout` with the
* editor toolbar, chart panels, and a ScrollableCanvas timeline.
*/
import { useState, useEffect, useMemo } from "react";
import { useParams, useRouteError, useLoaderData } from "react-router";
import {
MousePointer2,
Pencil,
Eraser,
Hand,
Undo2,
Redo2,
Save,
Play,
Pause,
ZoomOut,
ZoomIn,
Plus,
Eye,
EyeOff,
Trash2,
} from "lucide-react";
import { Flex, Text, Dialog, Button, TextField } from "@radix-ui/themes";
import { useToast } from "../toast";
import { ProjectLayout } from "../project-layout";
import {
Toolbar,
ToolbarGroup,
ToolbarDivider,
ToolbarButton,
ToolbarDropdown,
TransportDisplay,
} from "../toolbar";
import { SidebarPanel } from "../sidebar-panel";
import { ScrollableCanvas } from "../scrollable-canvas";
import { EditorController, BPM_CHANGE, TIME_SIGNATURE, EditEntityUserAction } from "../editor-core";
import type { ProjectFile } from "../project-format";
import { createTimelineBehaviorFactory } from "./timeline-behavior";
import {
globalCommandRegistry,
CommandSet,
KeyboardShortcutHandler,
CommandPalette,
} from "../command-registry";
function Field({ label, value }: { label: string; value: string }) {
return (
<Flex direction="column" style={{ gap: 2 }}>
<Text size="1" color="gray">
{label}
</Text>
<Text size="2">{value}</Text>
</Flex>
);
}
const mockCharts = [
{ name: "ANOTHER", level: "12" },
{ name: "HYPER", level: "10" },
{ name: "NORMAL", level: "7" },
];
const mockChartInfo = {
difficulty: "ANOTHER",
level: "12",
charter: "@vexcalibur",
};
const mockChartStats = {
totalNotes: "2,418",
longNotes: "142",
peakNPS: "18.4",
measures: "082",
bpmRange: "96 — 384",
};
function RightPanels({ controller }: { controller: EditorController }) {
const [levels, setLevels] = useState(() =>
controller.getLevelsForChart(controller.$selectedChartId.get() ?? ""),
);
useEffect(() => {
const unsub = controller.$hiddenLevelIds.subscribe(() => {
setLevels(controller.getLevelsForChart(controller.$selectedChartId.get() ?? ""));
});
return unsub;
}, [controller]);
const chartId = controller.$selectedChartId.get();
return (
<Flex direction="column">
<SidebarPanel
tabs={[
{
label: "Levels",
content: (
<>
<Flex direction="column" style={{ gap: 4 }}>
{levels.map((level) => (
<Flex
key={level.id}
justify="between"
align="center"
style={{
padding: "4px 8px",
borderRadius: 4,
backgroundColor: level.visible ? "var(--accent-3)" : "transparent",
}}
>
<Flex align="center" style={{ gap: 8 }}>
<Text size="2">{level.name}</Text>
<Text size="1" color="gray">
{level.mode}
</Text>
</Flex>
<Flex align="center" style={{ gap: 4 }}>
<div
style={{ cursor: "pointer" }}
onClick={() => controller.toggleLevelVisibility(level.id)}
>
{level.visible ? <Eye size={14} /> : <EyeOff size={14} />}
</div>
<div
style={{ cursor: "pointer" }}
onClick={() => controller.removeLevel(level.id)}
>
<Trash2 size={14} />
</div>
</Flex>
</Flex>
))}
</Flex>
{chartId && (
<Flex
justify="center"
align="center"
style={{
marginTop: 8,
padding: "4px 8px",
borderRadius: 4,
cursor: "pointer",
border: "1px dashed var(--gray-6)",
}}
onClick={() => controller.addLevel(chartId, "New Level", "beat-7k")}
>
<Plus size={14} style={{ marginRight: 4 }} />
<Text size="1" color="gray">
Add Level
</Text>
</Flex>
)}
</>
),
},
]}
/>
</Flex>
);
}
function LeftPanels({ project }: { project: ProjectFile }) {
return (
<Flex direction="column">
<SidebarPanel
tabs={[
{
label: "Project Information",
content: (
<>
<Field label="Title" value={project.metadata.title} />
<Field label="Artist" value={project.metadata.artist} />
<Field label="Genre" value={project.metadata.genre} />
</>
),
},
]}
/>
<SidebarPanel
tabs={[
{
label: "Chart List",
content: (
<>
<Flex direction="column" style={{ gap: 4 }}>
{mockCharts.map((chart) => (
<Flex
key={chart.name}
justify="between"
align="center"
style={{
padding: "4px 8px",
borderRadius: 4,
cursor: "pointer",
backgroundColor:
chart.name === mockChartInfo.difficulty
? "var(--accent-3)"
: "transparent",
}}
>
<Text size="2">{chart.name}</Text>
<Text size="1" color="gray">
Lv. {chart.level}
</Text>
</Flex>
))}
</Flex>
<Flex
justify="center"
style={{
marginTop: 8,
padding: "4px 8px",
borderRadius: 4,
cursor: "pointer",
border: "1px dashed var(--gray-6)",
}}
>
<Plus size={14} style={{ marginRight: 4 }} />
<Text size="1" color="gray">
Add Chart
</Text>
</Flex>
</>
),
},
]}
/>
<SidebarPanel
tabs={[
{
label: "Chart Info",
content: (
<>
<Field label="Difficulty" value={mockChartInfo.difficulty} />
<Field label="Level" value={mockChartInfo.level} />
<Field label="Charter" value={mockChartInfo.charter} />
</>
),
},
{
label: "Stats",
content: (
<>
<Field label="Total notes" value={mockChartStats.totalNotes} />
<Field label="Long notes" value={mockChartStats.longNotes} />
<Field label="Peak NPS" value={mockChartStats.peakNPS} />
<Field label="Measures" value={mockChartStats.measures} />
<Field label="BPM range" value={mockChartStats.bpmRange} />
</>
),
},
]}
/>
</Flex>
);
}
export function ProjectViewPage() {
const { slug: _slug } = useParams<{ slug: string }>();
const project = useLoaderData() as ProjectFile;
const error = useRouteError() as Error | undefined;
const { showError } = useToast();
const [controller] = useState(() => new EditorController({ project }));
const [paletteOpen, setPaletteOpen] = useState(false);
useEffect(() => {
const commands = new CommandSet();
commands.add({
id: "zoomIn",
title: "Zoom In",
shortcut: "Equal",
execute: () => controller.zoomIn(),
});
commands.add({
id: "zoomOut",
title: "Zoom Out",
shortcut: "Minus",
execute: () => controller.zoomOut(),
});
commands.add({
id: "openCommandPalette",
title: "Open Command Palette",
shortcut: "$mod+KeyK",
execute: () => setPaletteOpen(true),
});
commands.add({
id: "deleteSelection",
title: "Delete Selection",
shortcut: "Delete",
execute: () => controller.deleteSelection(),
});
commands.add({
id: "undo",
title: "Undo",
shortcut: "$mod+KeyZ",
execute: () => controller.undo(),
});
commands.add({
id: "redo",
title: "Redo",
shortcut: "$mod+Shift+KeyZ",
execute: () => controller.redo(),
});
commands.add({
id: "navigateUp",
title: "Navigate Up",
shortcut: "ArrowUp",
execute: () => controller.navigateSnap("up"),
});
commands.add({
id: "navigateDown",
title: "Navigate Down",
shortcut: "ArrowDown",
execute: () => controller.navigateSnap("down"),
});
commands.add({
id: "toolSelect",
title: "Select Tool",
shortcut: "KeyQ",
execute: () => controller.setTool("select"),
});
commands.add({
id: "toolPencil",
title: "Pencil Tool",
shortcut: "KeyW",
execute: () => controller.setTool("pencil"),
});
commands.add({
id: "toolErase",
title: "Erase Tool",
shortcut: "KeyE",
execute: () => controller.setTool("erase"),
});
commands.add({
id: "toolPan",
title: "Pan Tool",
shortcut: "KeyR",
execute: () => controller.setTool("pan"),
});
const unregister = commands.registerTo(globalCommandRegistry);
const handler = new KeyboardShortcutHandler({
registry: globalCommandRegistry,
});
const onKeyDown = (e: KeyboardEvent) => {
if (paletteOpen) return;
handler.onKeyDown(e);
};
window.addEventListener("keydown", onKeyDown);
return () => {
window.removeEventListener("keydown", onKeyDown);
handler.dispose();
unregister();
};
}, [controller]);
const behaviorFactory = useMemo(() => createTimelineBehaviorFactory(controller), [controller]);
const [cursorPulse, setCursorPulse] = useState(controller.$cursorPulse.get());
useEffect(() => {
const unsub = controller.$cursorPulse.subscribe(setCursorPulse);
return unsub;
}, [controller]);
const [snap, setSnap] = useState(controller.$snap.get());
useEffect(() => {
const unsub = controller.$snap.subscribe(setSnap);
return unsub;
}, [controller]);
const [zoom, setZoom] = useState(controller.$zoom.get());
useEffect(() => {
const unsub = controller.$zoom.subscribe(setZoom);
return unsub;
}, [controller]);
const [activeTool, setActiveTool] = useState(controller.$activeTool.get());
useEffect(() => {
const unsub = controller.$activeTool.subscribe(setActiveTool);
return unsub;
}, [controller]);
const [bpmEditOpen, setBpmEditOpen] = useState(false);
const [bpmEditEntityId, setBpmEditEntityId] = useState<string | null>(null);
const [bpmValue, setBpmValue] = useState("");
const [timeSigEditOpen, setTimeSigEditOpen] = useState(false);
const [timeSigEditEntityId, setTimeSigEditEntityId] = useState<string | null>(null);
const [timeSigNumerator, setTimeSigNumerator] = useState("");
const [timeSigDenominator, setTimeSigDenominator] = useState("");
useEffect(() => {
const unsub = controller.$lastPlacedEntityInfo.subscribe((info) => {
if (!info) return;
if (info.columnId === "bpm") {
const entity = controller.getEntityManager().get(info.entityId);
const bpm = entity
? (controller.getEntityManager().getComponent(entity, BPM_CHANGE)?.bpm ?? 120)
: 120;
setBpmEditEntityId(info.entityId);
setBpmValue(String(bpm));
setBpmEditOpen(true);
} else if (info.columnId === "time-sig") {
const entity = controller.getEntityManager().get(info.entityId);
const ts = entity
? controller.getEntityManager().getComponent(entity, TIME_SIGNATURE)
: undefined;
setTimeSigEditEntityId(info.entityId);
setTimeSigNumerator(String(ts?.numerator ?? 4));
setTimeSigDenominator(String(ts?.denominator ?? 4));
setTimeSigEditOpen(true);
}
controller.$lastPlacedEntityInfo.set(null);
});
return unsub;
}, [controller]);
const handleBpmConfirm = () => {
if (!bpmEditEntityId) return;
const entity = controller.getEntityManager().get(bpmEditEntityId);
if (!entity) return;
const newBpm = parseFloat(bpmValue);
if (Number.isNaN(newBpm) || newBpm <= 0) return;
const oldComponents = structuredClone(entity.components);
const newComponents = {
...oldComponents,
[BPM_CHANGE.key]: { bpm: newBpm },
};
controller.applyAction(
new EditEntityUserAction(controller.ctx, bpmEditEntityId, oldComponents, newComponents),
);
setBpmEditOpen(false);
setBpmEditEntityId(null);
};
const handleTimeSigConfirm = () => {
if (!timeSigEditEntityId) return;
const entity = controller.getEntityManager().get(timeSigEditEntityId);
if (!entity) return;
const num = parseInt(timeSigNumerator, 10);
const den = parseInt(timeSigDenominator, 10);
if (Number.isNaN(num) || num <= 0 || Number.isNaN(den) || den <= 0) return;
const oldComponents = structuredClone(entity.components);
const newComponents = {
...oldComponents,
[TIME_SIGNATURE.key]: { numerator: num, denominator: den },
};
controller.applyAction(
new EditEntityUserAction(controller.ctx, timeSigEditEntityId, oldComponents, newComponents),
);
setTimeSigEditOpen(false);
setTimeSigEditEntityId(null);
};
const zoomPercent = `${Math.round(zoom * 100)}%`;
const engine = controller.getTimingEngine();
const timeStr = engine.formatTime(engine.pulseToSeconds(cursorPulse));
const measureInfo = engine.getMeasureAtPulse(cursorPulse);
const beatLength = 240; // 1 quarter note = PPQN
const beat = Math.floor((cursorPulse - measureInfo.measureStart) / beatLength) + 1;
const measureStr = `${measureInfo.measureIndex + 1}:${beat}`;
useEffect(() => {
if (error) {
showError({
title: "Failed to load project",
description: error.message,
});
}
}, [error, showError]);
return (
<>
<ProjectLayout
leftPanels={<LeftPanels project={project} />}
rightPanels={<RightPanels controller={controller} />}
toolbar={
<Toolbar>
<ToolbarGroup label="Mode">
<ToolbarButton
icon={<MousePointer2 size={16} />}
label="Select"
active={activeTool === "select"}
onClick={() => controller.setTool("select")}
/>
<ToolbarButton
icon={<Pencil size={16} />}
label="Pencil"
active={activeTool === "pencil"}
onClick={() => controller.setTool("pencil")}
/>
<ToolbarButton
icon={<Eraser size={16} />}
label="Erase"
active={activeTool === "erase"}
onClick={() => controller.setTool("erase")}
/>
<ToolbarButton
icon={<Hand size={16} />}
label="Pan"
active={activeTool === "pan"}
onClick={() => controller.setTool("pan")}
/>
</ToolbarGroup>
<ToolbarDivider />
<ToolbarGroup label="History">
<ToolbarButton icon={<Undo2 size={16} />} label="Undo" />
<ToolbarButton icon={<Redo2 size={16} />} label="Redo" />
<ToolbarButton icon={<Save size={16} />} label="Save" />
</ToolbarGroup>
<ToolbarDivider />
<ToolbarGroup label="Transport">
<ToolbarButton icon={<Play size={16} />} label="Play" />
<ToolbarButton icon={<Pause size={16} />} label="Pause" />
<TransportDisplay time={timeStr} pulse={String(cursorPulse)} measure={measureStr} />
</ToolbarGroup>
<ToolbarDivider />
<ToolbarGroup label="Snap">
<ToolbarDropdown
value={snap}
options={["1/4", "1/8", "1/12", "1/16", "1/24", "1/32", "1/48", "1/64"]}
onSelect={(value) => controller.setSnap(value)}
/>
</ToolbarGroup>
<ToolbarDivider />
<ToolbarGroup label="Zoom">
<ToolbarButton
icon={<ZoomOut size={16} />}
label="Zoom Out"
onClick={() => globalCommandRegistry.execute("zoomOut")}
/>
<ToolbarDropdown
value={zoomPercent}
options={["25%", "50%", "75%", "100%", "125%", "150%", "200%", "400%"]}
onSelect={(value) => {
const pct = parseInt(value.replace("%", ""), 10);
controller.setZoom(pct / 100);
}}
testId="zoom-dropdown"
/>
<ToolbarButton
icon={<ZoomIn size={16} />}
label="Zoom In"
onClick={() => globalCommandRegistry.execute("zoomIn")}
/>
</ToolbarGroup>
</Toolbar>
}
timeline={<ScrollableCanvas behavior={behaviorFactory} />}
/>
<CommandPalette
registry={globalCommandRegistry}
open={paletteOpen}
onClose={() => setPaletteOpen(false)}
/>
<Dialog.Root open={bpmEditOpen} onOpenChange={setBpmEditOpen}>
<Dialog.Content maxWidth="300px">
<Dialog.Title>Edit BPM</Dialog.Title>
<TextField.Root
type="number"
value={bpmValue}
onChange={(e) => setBpmValue(e.target.value)}
onKeyDown={(e) => {
if (e.key === "Enter") handleBpmConfirm();
}}
/>
<Flex gap="2" mt="3" justify="end">
<Button variant="soft" onClick={() => setBpmEditOpen(false)}>
Cancel
</Button>
<Button onClick={handleBpmConfirm}>OK</Button>
</Flex>
</Dialog.Content>
</Dialog.Root>
<Dialog.Root open={timeSigEditOpen} onOpenChange={setTimeSigEditOpen}>
<Dialog.Content maxWidth="300px">
<Dialog.Title>Edit Time Signature</Dialog.Title>
<Flex gap="2" align="center">
<TextField.Root
type="number"
value={timeSigNumerator}
onChange={(e) => setTimeSigNumerator(e.target.value)}
onKeyDown={(e) => {
if (e.key === "Enter") handleTimeSigConfirm();
}}
/>
<Text size="2">/</Text>
<TextField.Root
type="number"
value={timeSigDenominator}
onChange={(e) => setTimeSigDenominator(e.target.value)}
onKeyDown={(e) => {
if (e.key === "Enter") handleTimeSigConfirm();
}}
/>
</Flex>
<Flex gap="2" mt="3" justify="end">
<Button variant="soft" onClick={() => setTimeSigEditOpen(false)}>
Cancel
</Button>
<Button onClick={handleTimeSigConfirm}>OK</Button>
</Flex>
</Dialog.Content>
</Dialog.Root>
</>
);
}
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